var name='水中天';
function abc(a,b){
    console.log(this.name+a+b);
    console.log("abc被调用");
}
abc('1','2');


abc.apply({name:'水中天'},['+','1']);
abc.call({ name:'水中天'},'+','2');
var STT=abc.bind({name:'苏中庭'},'+','3');
STT();
// abc('1','2');